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giant clam
noun
: a very large clam (Tridacna gigas) found on the coral reefs of the Indian and Pacific oceans that sometimes weighs more than 500 pounds (227 kilograms)
Examples of giant clam in a Sentence
Recent Examples on the Web
Inspectors observed four live giant clams in a water tank without any shellstock identification tags.
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Hannah Poukish, Sacramento Bee, 10 Jan. 2025
Not as important: a giant clam and the inscrutable Matangi (Awhimai Fraser) who may or may not be working for the evil Nalo.
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Kate Erbland, IndieWire, 26 Nov. 2024
From colorful giant clams to barnacles, there’s no shortage of creatures that have taken inspiration from plants and simply stopped moving.
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Max Bennett, Discover Magazine, 15 Jan. 2024
Lunch is a steady stream of traditional tapas, including pil pil prawn croquettes and giant clams, followed by a digestif of sweet, dark Málaga Virgen wine.
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Lisa Johnson, Condé Nast Traveler, 20 Nov. 2023
Guests aboard Four Seasons Explorer can make good use of the PADI 5-Star Dive Centre while visiting such sites as Helmet Wreck, a World War II wreck; Clam City, home to 250-pound giant clams; and Peleliu Wall.
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Stefanie Waldek, Travel + Leisure, 30 Aug. 2023
But even these hellish habitats are crawling with life, ranging from giant clams and ravenous crabs to spindly octopuses and ghostly eelpout fish.
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Jack Tamisiea, Scientific American, 9 Aug. 2023
The coral reef that frames the island brims with tropical fish, manta rays, giant clams, and sharks.
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Lindsay Cohn, Travel + Leisure, 3 Apr. 2023
Like all clams, the giant clam, Tridacna gigas, pumps in water through a siphon, and transports it to the gills through the beating motion of short, hair-like cilia.
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Discover Magazine, 29 June 2010
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Word History
First Known Use
circa 1889, in the meaning defined above
Dictionary Entries Near giant clam
Cite this Entry
“Giant clam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/giant%20clam. Accessed 22 Feb. 2025.
More from Merriam-Webster on giant clam
Britannica.com: Encyclopedia article about giant clam
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